If it is such a "trash asset," why have you continued to allow people to trade it on your exchange, making fees on every trade? It's been over a year since this problem with Monacoin happened. Today alone, this "trash asset" has done almost 1 BTC worth of volume on your exchange. Also, the bitcoin "administration" is not involved in this. Furthermore, it is not "inappropriate" for community members to support what appears to be a legitimate complaint against you.
If the user knowingly bought the coin while the wallet/withdrawal was disabled then I'd say LiveCoin might have a point but they need to unblock the account. Idiots buying worthless shitcoins is not something an exchange should be responsible for. Still it's a shitty move to allow trading in these circumstances. MONA is trading 75% lower on LiveCoin than it is
elsewhere.